7545420834 has 32 divisors (see below), whose sum is σ = 17249657856. Its totient is φ = 2155461840.

The previous prime is 7545420821. The next prime is 7545420853. The reversal of 7545420834 is 4380245457.

It is a super-2 number, since 2×7545420834² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311169 + ... + 334539.

It is an arithmetic number, because the mean of its divisors is an integer number (539051808).

Almost surely, 2^7545420834 is an apocalyptic number.

7545420834 is an abundant number, since it is smaller than the sum of its proper divisors (9704237022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7545420834 is a wasteful number, since it uses less digits than its factorization.

7545420834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31070.

The product of its (nonzero) digits is 537600, while the sum is 42.

The square root of 7545420834 is about 86864.3818489489. The cubic root of 7545420834 is about 1961.3773494108.

The spelling of 7545420834 in words is "seven billion, five hundred forty-five million, four hundred twenty thousand, eight hundred thirty-four".